Following the name of the champion(s): Indicates the number of times the competitor has held that title at that point.
[...]
Indicates a gap in the listing where title changes are not known.
<
Title was held or changed hands no later than this. In these cases, it is known that a competitor held the title at a certain time but not when he/she won it.
@
Order uncertain. Different titleholders may be known for the same year, for example, but it is not known who held the title before whom.
#
Unofficial or disputable claims. These are usually matches that certainly took place, but where there is doubt that the competitor shown should be recognized as a true title holder. These listings are also italicized.
* Bolded letters in the competitor's name indicate the surname/family name.
UMA (Matsui Yūma)
2019-10-06
Tōkyō
Defeats Caz Janjira to become the first champion; renamed REBELS-BLACK title in 19-12; vacates on 20-12-15 due to retinal detachment; retires on 21-01-11; REBELS merged with KNOCK OUT in 21-03.
